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KonstantinChe [14]
3 years ago
12

If y varies directly with x, write an equation for the direct variation. Then find each value.

Mathematics
1 answer:
Viktor [21]3 years ago
6 0
1)
y = kx
-12 = k(9)
k = -4/3

y = (-4/3)(-4)
y = 16/3

2)
y = kx
8 = 20k
k = 2/5

y = (2/5)(10)
y = 4


3)
y= kx
-6 = k(-14)
k = 3/7

-4 = (3/7)x
-4(7/3) = x
x = -28/3
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fredd [130]

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128m-71m = 57m Find the displacement from the descent to the ascent and then add that to 1364m to get your answer.

1421m


5 0
4 years ago
Please show how you got your answer to the problem.<br> 4/5 + 3/15 - 2/3 =
natta225 [31]

Answer:

Simplified Answer: 1/3 Non-Simplified Answer: 5/15

Step-by-step explanation:

Make every fraction have a common denominator:

4/5 * 3/3 = 12/15

3/15 = 3/15

2/3 * 5/5 = 10/15

Add and/or Subtract the numerator(s):

12 + 3 = 15

15 - 10 = 5

Place the final numerator over the denominator (Non-simplified Answer):

5/15

Simplify (What can you divide the numerator and the denominator by to make the fraction into it's simplest from without any remainders?):

5 goes into both 5 and 15.

5/15 divided by 5 = 1/3

Simplified Answer:

1/3

5 0
3 years ago
Help please. (right now i’m just filling in for the 20 characters it’s not relevant to the question)
suter [353]

Answer:

9

Step-by-step explanation:

We're using the Pythagorean theorem here since it's a right triangle.

a^2 (side) + b^2 (side) = c^2 (hypotenuse)

12 = a

x = b

15 = c

12^2 + b^2 = 15^2

144 + b^2 = 225

- 144             - 144 (subtracting 144 from both sides to isolate b)

b^2 = 81

\sqrt{b^2} = \sqrt{81} (getting rid of the exponent by squaring both sides)

b = 9

x = 9

8 0
3 years ago
If<br> 2/9<br> of an amount is equal to 14, what is the whole amount equal to
Alex

I think it’s 63.

I divided to get its simplified version. 14÷2 is seven, which would be 1/9. Multiply the denominator by seven, which is 63. You can also look up online to check that. 14 is indeed 2/9 of 63.

3 0
3 years ago
Find the shaded area.<br><br> ​Round to the nearest tenth if necessary
zhuklara [117]

Answer:

297 mm²

Step-by-step explanation:

22 mm × 18 mm = 396 mm²

(9 × 22) ÷ 2 = 99 mm²

396 mm² - 99 mm²

297 mm²

6 0
3 years ago
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